Answer:
A.
To show that tax increases don't always improve what the government says it will improve
Step-by-step explanation:
By stating that despite supporting a fuel tax increase in the past, the current situation is worse off, Rohrbach implies that the promised improvements or benefits from the tax increase did not materialize as expected. This suggests a skepticism or criticism of the government's claims regarding the positive impact of tax increases. It highlights the idea that tax increases may not always lead to the intended or desired outcomes, contrary to what the government may assert.